Attachment for riveting-machines.



Patented July 3, I900.

w. L. KELLERMAN. ATTACHMENT FOB RIVETING MACHINES.

(Application filed. Nov. 10, 1899.)

(No Model wiiztesses "cams PErzRs 00.. Pumumm. WASHI \VILLIAM L. KELLERMAN,

ATTACHI'M ENT FO R PATENT Orrren.

OF FORT SCOTT, KANSAS.

RIVETING-MACHINES.

SPECIFICATION formingpart of Letters-Patent No. 652,850, dated uly 3, 1900.

Application filed November 10, 1899. Serial No. 736,462. (No model.)

To all whom it may concern:

Be it known that I, WILLI M L. KELLER- MAN, a citizen of the United States, residing at Fort Scott, in the county of Bourbon and State of Kansas, have invented new and useful Improvements in Attachments for Riveting-Maohines, of which the following is a specification.

Myinvention relates to riveting-machines, and contemplates the provision of an attachment for such machines calculated to materially facilitate the operation of riveting box and other loops, such 'as employed in harness and similar pieces of work.

With the foregoing in mind the invention will be fully understood from the following description and claims when taken in conjunction with the annexed drawings, in which- Figure 1 is a perspective view of a rivetingmachine equipped with my attachment, said attachment being shown in its operative position. Fig. 2 is an enlarged detail section illustrating the preferred manner of securing the block which is preferablyemployedin conjunction with my attachment on the worksupport of the machine.

Similar letters designate corresponding parts in both views of the drawings.

The riveting-machine illustrated is of the ordinary well-known construction and among other things comprises a work-support A, an overhanging arm B, providedrwith a rivetholder 0, a rivet-driving plunger D, arranged in the overhanging arm coincident with the rivet-holder O, and means for depressing and subsequently raising said plunger after the usual manner.

E is an iron block which is removably arranged on the work-support of the machine below the rivet-holder O and is provided with a depending shank a, seated in a socket b in the upper side of the work-support A, and F is the work-holder, which constitutes my improved attachment.

In the preferred embodiment of the invention the work-holder is made of a strap of steel or other suitable metal in approximate acute-angle form and is loosely mounted on a post 0, rising from the support A, in such a manner as to permit of its outer arm d being swung on and off the block E and slightly raised and lowered with respect to the same. It is provided on its outer arm at with an upwardly-extending teat e and on its inner arm f has astop g, which by engaging the overhanging arm Bis adapted to insure the teat e resting in a position coincident with the rivetholder 0 and plunger D when the work-holder is swung inwardly to the position shown in Fig. 1.

In operating a riveting-machine equipped with my improved attachment the arm (1 of the work-holder F is swung off the Work-support A and the box or other loop to be riveted is placed on said arm with its lapped edges uppermost and above the same. The work-holder is then returned to the position shown in Fig. 1, a rivet having a tubular shank is placed in the holder C, with its head uppermost, and the plunger D is forcibly depressed. When the plunger is thus moved downwardly, the tubular shank ofthe rivet is forced through the lapped edges of the box or other loop, and being engaged by the teat e and the upper side of the arm d of the workholder is upset against the upper wall of the loop and securely fixed in position. After one rivet is placed as described the holder F and the box-loop are raised slightly from the work-support of the machine and the loop is moved endwise on the holder a distance corhave the rivets apart, after which the workholder and the loop thereon are lowered to the position shown in Fig. 1 and the operation described. is repeated. When the loop has been riveted throughout its length, the holder F is swung outwardly from the support A and the loop is moved endwise off the same to give place to a new loop.

WVhile designed more particularly for facilitating the riveting of box and other loops such as employed in harness, my-improved attachment may be used to advantage in riveting various other pieces of work which have one or more layers of leather or other material below the layers to be connected by rivets, it being simply necessary when such pieces of work are to be operated on to interresponding to the distance it is desired to pose the arm d of the work-holder between the layers to be connected by rivets and the other layer or layers.

The attachment is removably secured in the post 0, preferably by a removable pin 0', and may therefore be readily removed and replaced by a wider or narrower attachment, according to the width of the loops or other work to be riveted. It is obvious, however, that an arm of a certain Width can be used in the riveting of loops and other work of a corresponding or greater width than the arm.

The block E is simply used in place of the anvil employed on the machine in the ordinary operation of riveting. It covers the hole provided in the upper side of the work-support for the reception of the shank of the ordinary anvil and at the same time affords a greater space for the work below the rivetholder. From this it follows that any means may be employed in lieu of the block E to cover the hole I) or the attachment might rest directly on the work-support and over the hole therein.

Having thus described my invention, what I claim is The combination with a riveting-machine; of an attachment pivotally connected thereto and comprising an outer, Work-holding arm provided with an upwardly-extending teat, and an inner arm disposed at an angle to the outer arm and provided with a stop for engaging the machine and thereby limiting the inward-swinging movement of the attachment, substantially as specified.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WILLIAM L. KELLERMAN.

Witnesses:

H. A. POTTER, O. L. ROODHOUSE. 

